body, html
    line-height: 1
    font-weight: 200
    font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light',
    arial, sans-serif

.clearfix
    display: inline-block
    &:after
        display: block
        content: "."
        height: 0
        line-height: 0
        clear: both
        visibility: hidden


@media(-webkit-min-devixe-pixel-ratio: 1.5), (min-devixe-pixel-ratio: 1.5)
    .border-1px
    &::after
        -webkit-transform: scaleY(0.7)
        transform: scale(0.7)



@media(-webkit-min-devixe-pixel-ratio: 2), (min-devixe-pixel-ratio: 2)
    .border-1px
    &::after
        -webkit-transform: scaleY(0.5)
        transform: scale(0.5)